Chemical and Strontium, Oxygen, and Carbon Isotopic Compositions of Carbonates from the Lesser Himalaya: Implications to the Strontium Isotope Composition of the Source Waters of the Ganga, Ghaghara, and the Indus Rivers

Singh, Sunil Kumar; Trivedi, J. R.; Pande, Kanchan; Ramesh, R.; Krishnaswami, S.

doi:10.1016/s0016-7037(97)00381-5

Cited by 128 publications

(83 citation statements)

References 14 publications

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“…The range is between 1 and 2 µmol/l in surface waters, either in wet or dry periods. The observed range in surface water agrees with that found in rivers in the Ganga-Brahmaputra-Indus river system (Krishnaswami et al, 1992;Pande et al, 1994;Singh et al, 1998) and Himalayan rivers (Galy et al, 1999). However, Sr contents in groundwater vary by 2 order of magnitude from less than 0.4 up to 10 µmol/l on both banks of the Subarnarekha River.…”

Section: Variations In the Concentrations And Strontium Isotopessupporting

confidence: 85%

“…Strontium isotopes display a wide variation both in the low and high water stages from Sr ratios is similar to the range for rivers draining old cratons (Guyana Shield, Edmond et al, 1995;French Guiana, Négrel and Lachassagne, 2000;Lena River basin, Huh and Edmond, 1999) and for the Ganga-Brahmaputra -Indus River system (Krishnaswami et al, 1992;Pande et al, 1994;Singh et al, 1998). Similar ranges are observed in Himalayan rivers (Galy et al, 1999 (Gaillardet et al, 1997;Bullen et al, 1996;Galy et al, 1999 (Figure 7) is classically used to evaluate two-component mixing and end-member water compositions.…”

Section: Variations In the Concentrations And Strontium Isotopesmentioning

confidence: 54%

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Hydrogeochemical processes, mixing and isotope tracing in hard rock aquifers and surface waters from the Subarnarekha River Basin, (east Singhbhum District, Jharkhand State, India)

et al. 2007

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The chemical and isotopic compositions of river and groundwater reflect the different natural processes that provide chemical elements to the dissolved load, i.e. mainly the weathering of rocks and soils, atmospheric inputs and anthropogenic disturbances.This study reports on the geochemistry of surface-and groundwater along a part of the Subarnarekha River system (north-eastern India) collected during monsoon and dry season, during a monitoring program aimed at evaluating impacts of mining and metallurgy on the river system.The aquifer is of fracture type and the seasonal behaviour, groundwater flow conditions and pollutant transfer were observed through a network of 69 wells with typical depths of 50 meters.Geochemical observations, including major cations and anions, trace element concentrations and isotopic tracing (stable isotopes of the water molecule, strontium isotopes) come to conclusions on the origin and the relationships between the surface-and groundwater in the studied catchment.A large range of salinities is observed in surface-and groundwater, both for dry or wet periods.Surface water samples plot within the field HCO 3 -Ca during both water stages. Most groundwater samples plot within the field of Ca-SO 4 water type and HCO 3 -Ca water type. This reflects the high Ca input in groundwater, other than weathering. Such inputs could be related to (i) carbonate amendments used in agricultural practices and (ii) residues from ore processing.

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Section: Variations In the Concentrations And Strontium Isotopessupporting

confidence: 85%

Section: Variations In the Concentrations And Strontium Isotopesmentioning

confidence: 54%

Hydrogeochemical processes, mixing and isotope tracing in hard rock aquifers and surface waters from the Subarnarekha River Basin, (east Singhbhum District, Jharkhand State, India)

et al. 2007

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“…Therefore, determination of SWRs has to depend on other approaches such as those based on elemental ratios in rivers and in basalts. SWRs are generally calculated using a suitable proxy (e.g., Na* concentration in rivers) and assumptions regarding the release of various elements from rocks to water (Singh et al, 1998;Galy and France-Lanord, 1999;Dalai et al, 2002;Jacobson et al, 2002;Bickle et al, 2003). For some of the rivers sampled in this study, Na* may not be a suitable proxy, as they may be receiving Na from saline soils and anthropogenic sources in addition to rain and basalts.…”

Section: Silicate Weathering Ratesmentioning

confidence: 99%

Chemical weathering in the Krishna Basin and Western Ghats of the Deccan Traps, India: Rates of basalt weathering and their controls

Das

Krishnaswami

Sarin

et al. 2005

Geochimica et Cosmochimica Acta

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177

142

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“…Sr concentration of YRS sediments ranges from ~45 to 156 µg g -1 (mean: 75 ± 22 µg g -1 ) and shows no definite downstream trend. This range and mean are lower than those in the Precambrian carbonates in the Yamuna basin (range: 33 to 363 µg g -1 , mean: 162 ± 120 µg g -1 , Singh et al, 1998). Four granites collected in and around Hanuman Chatti (Fig.…”

Section: Strontium and Bariummentioning

confidence: 71%

“…where CaO* represents CaO of the silicate fraction (Nesbitt and Young, 1982 (Singh et al, 1998). Assuming this is also valid for Ca/Mg ratio in bed carbonates, the CIA for individual samples decreases only marginally, with an average ~59 (Dalai et al, 2002a).…”

Section: Major Elementsmentioning

confidence: 95%

Sediment geochemistry of the Yamuna River System in the Himalaya: Implications to weathering and transport

2004

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Bed sediments of the Yamuna River and its tributaries in the Himalaya (Yamuna River System, YRS) have been analyzed for major elements and trace metals (Sr, Ba, Ni, Cu, Co, Zn, Pb and Cr). These results have been used to characterize chemical weathering and transport in the Himalaya, to assess relative mobility of elements during weathering and to understand heavy metal association. Concentrations of major and trace elements of YRS sediments vary between 20 and 50%. In general, elemental variability reduces when data are analyzed individually for the major rivers, suggesting that tributaries draining diverse lithology contribute significant variations. Comparison of sediment chemistry with composition of source rocks and average Upper Continental Crust (UCC) suggests significant loss of Na, K, Ca and Mg from source rocks during weathering, the degree of loss being more for Ca and Na. Chemical index of alteration (CIA) for YRS sediments averages at 59, indicating that weathering in the basin is of moderate intensity. This inference is also supported by major ion chemistry of YRS waters and is attributed to steep gradient and enhanced physical erosion in the basin. Available results seem to indicate that Na and Sr are effectively more mobile than Ba, which is thought to be a combined effect of higher solubility of Na and Sr, and the affinity of Ba to be adsorbed onto solid phase. Heavy metals show significant positive correlation with Al and weak correlation with Fe, Mn and P. These observations suggest that metal concentrations are controlled mainly by clay mineral abundances, and that Fe-Mn oxides and organic matter may be playing less significant role. Heavy metal concentrations of YRS sediments are lower than those of suspended particulates of the Yamuna river, presumably due to higher clay mineral abundances in the latter. Strong association of metals with Al, and lower metal concentrations in bed sediments compared to suspended matter underscores the importance of sediment transport and mineral sorting in influencing the YRS sediment chemistry. Enrichment factor and geo-accumulation index calculated for heavy metals in YRS sediments suggest that they are mainly of natural origin and that anthropogenic activities exert little influence on their abundances.

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Chemical and Strontium, Oxygen, and Carbon Isotopic Compositions of Carbonates from the Lesser Himalaya: Implications to the Strontium Isotope Composition of the Source Waters of the Ganga, Ghaghara, and the Indus Rivers

Cited by 128 publications

References 14 publications

Hydrogeochemical processes, mixing and isotope tracing in hard rock aquifers and surface waters from the Subarnarekha River Basin, (east Singhbhum District, Jharkhand State, India)

Hydrogeochemical processes, mixing and isotope tracing in hard rock aquifers and surface waters from the Subarnarekha River Basin, (east Singhbhum District, Jharkhand State, India)

Chemical weathering in the Krishna Basin and Western Ghats of the Deccan Traps, India: Rates of basalt weathering and their controls

Sediment geochemistry of the Yamuna River System in the Himalaya: Implications to weathering and transport

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